<!DOCTYPE html>
<html>
	<head>
		<title> 函数嵌套 </title>
		<script type="text/javascript">			
			function first(){
              	alert('this is the first function ');
            }
            function second(){
              	first();
           	}
            second();
		</script>
	</head>

	<body>	
	
	</body>
</html>
